Machine for forming finishing-molding



L. L. HAMILTON.

MACHINE FOR FORMING FINISHING MOLDING.

APPLICATION FILED JAN. 12, I920.

1,386, 1 O7, Patented Aug. 2, 1921.

UNITED STATES PATENT OFFICE.

MACHINE FOR FORMING FINISHING-MOLDING.

Specification of Letters Patent.

Patented Aug. 2, 1921.

Application filed January 12, 1920. Serial. No. 350,992.

I '0 all whom it may concern:

Be it known that I, LEWIS L. HAMILTON, a citizen of the United States ofAmerica, residin at Detroit, in the county of Wayne and tate ofMichigan, have invented certain new and useful Improvements in Machinesfor Forming Finishing-Molding, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention, relates to the manufacture of finishing molding, such asis used in the manufacture of automobile bodies and for similarpurposes, and of that type comprising a filled shell having securingnails projecting from the filling. It is the object of the invention toobtain a machine for the manufacture of such molding, which willautomatically set the nails or securing devices in the molten metalforming the filling, and will hold said nails properl positioned untilthe metal has solidified. 0 this end, the invention consists in theconstruction as hereinafter set forth.

In the drawings:

Figure 1 is a sectional side elevation of the machine;

Fig. 2 is a cross-section on line 2-2 of Fig. 1;

Figs. 3 and 4 are cross-sections, respectively, on lines 3-3 and 4-4 ofFig. 1'.

While my invention relates particularly to the incorporation of thesecuring nails into the molding, this feature is combined with mechanismfor manufacturin the complete molding and which is preferably of thefollowing construction:

A are forming rolls arranged in series and adapted to progressivelyfashion a flat metallic strip B of brass, or other suitable material,into a segmental or' trough-shaped form. C is a tension plate for thestrip in advance of the forming and feeding rolls A. D is a receptaclefor molten metal having a discharge spout E which directs the metal intothe trough of the molding, the flow be ng regulated by an adjustablevalve F. G is a gas burner, or other heater, for the receptacle D. H isa fluxing device for ap plying a suitable flux to the inner face of themolding in advanceof the filling.

To secure the nails, or other fastening devices, in the molding it isnecessary to press the same into the molten metal in the trough and tohold them in proper position until the metal has solidified. Inasmuch asthe filling metal is usually of a greater specific gravity than thenails, force is required to hold them immersed and to prevent flotation.I have, therefore, devised an effective means for accomplishing thispurpose, which consists in electro-magnetically drawing the nails intothe molten metal and also holding them, properly positioned, while themetal solidifies. .As shown, I is a bar of magnetic metal arrangedbeneath the molding as it is fed from the fluxing and filling devices.This bar is energized by magnets, preferably a plurality of magnets, Jarranged to impart to the bar the same polarity throughout its length. Kis a feeding device for successively bringing the nails within range ofthe magnetic attraction which as shown comprises a wheel having a seriesof peripheral sockets L therein into which the points of the nails areset. M are spring clips or friction holding devices for retaining thenails in the sockets, and N are releasing pins for the clips M which areoperated by a cam or roll 0 at the point in the revolution of the Wheelwhere the nails come into range of the magnetic attraction Beyond thenail feeding device K there is arranged a cooling mechanism for which Ipreferably use a fan P, directing the current of air downward upon themolding and associated devices. The molding is held from displacementdur ing the cooling by a grooved guide roll Q, which bears upon theopposite edges of the shell and provides suflicient clearance for thepassage of the nails. R is a brush arranged to remove any of themoltenmetal which may have accumulated on the outer surface of the molding.

With the construction as described, the operation is as follows: Thesheet metal strip B is passed through the tension device C and theforming rolls A by which it is fashioned into the curved ortrough-shaped form. It is then fed by the fluxing device H, which coatsthe inner surface thereof and then to the filling device, Where themolten metal from the receptacle B is fed through the spout E. This willcompletely fill the trough, which is then fed forward beneath the nailfeed K. The nails are placed in the feeding device K either by hand orany suitable mechanism, and are successively fed around with the wheel,Which is timed with the advance of the molding. Upon reaching the pointwhere the releasing roll 0 is located, the nails are in substantiallyvertical P. Here the metal will be solidi ed and after fully set, themolding passes out from the range of magnetic attraction, is wiped fromany surplus metal by the brush R and is fed out from the machine.

What I claim as my invention is:

1. The combination with means for advancing a hollow strip filled withmolten material, of means for feeding securing devices adjacent to saidfilled strip, and magnetic means for drawing said securing devices intothe molten metal and for holding the same properly positioned until themetal solidifies.

2. The combination with means for advancing a molten metal filled strip,of magnetic means for drawing securing devices into the molten metal andretaining the same until themetal is solidified.

3. The method of forming finishing strips comprising filling the hollowstrip vvith molten metal, placing said filled strip in a magnetic fieldand lacing the securing devices within the in uence of said magneticfield to draw the same into the molten metal and to retain them in thisposition until the metal is solidified.

4. The combination with means for forming a metal strip into atrough-shaped section, of means for filling the formed strip with moltenmetal, means for creating a magnetic field in the path of the advancingfilled strip such as to exert magnetic attraction vertically downward ofthe filled strip, and means for feeding securing devices of magneticmaterial into the influence of said field, whereby they, are drawn intothe molten metal and held in upright position therein until the metalsolidifies. 1

5. The combination with means for fill' ten metal, of means for creatinga magnetic whereby said devices are drawn downward through the moltenmetal and held in upright position therein, and cooling means forsolidifying the metal while still in the range of magnetic attraction.

6. The combination with means for advancing a metallic strip, of formingdevices for fashioning said strip into a troughshaped section, means forfilling the advancing strip with molten metal, magnetic means includinga bar of one polarity extending longitudinally of the advancing stripbeneath the same, means for feeding securing devices above the advancingstrip and releasing the same when under the influence of magneticattraction, and cooling means for solidifying the molten metal whilesaid securing devices are held relatively fixed to the advancing strip.

7. The combination with means for advancing a sheet metal strip, offorming means operating upon the advancing strip to fashion the sameinto a trough-shaped section, means for filling the stripwithmolmagnetic attraction, and means for removing any of the molten metaladhering to the outer face of the strip. I

8. The combination with means for advancing a hollow strip filled withmolten material, of means for periodically feeding securing devices intosaid filled strip, and means for retaining said securing devices uprightand in spaced relation with each other until the molten metal,solidifies.

In testimony whereof I aflix my signature. LEWIS LEONARD HAMILTON.

